How to log data from simulated LiDARs

[Boris Leroux]

Hi, impressive work, thanks for sharing. I'm really a newbie at ROS and Gazebo, but I need velodyne simulated data for research purpose.

I would like to know if you can give us a simple way to record the simulated data in a text file ?

When the simulation is running I've tried :

rostopic echo /velodyne_points > test.txt

But it don't look like the best way to do it. Please let me know

Chears Boris

[Kevin Hallenbeck]

Thanks, but you might get better answers with a larger audience on https://answers.ros.org/

The rosbag package can be used to record and playback any topic in ROS. There are several methods to convert rosbag files to csv files:
https://www.google.com/search?q=rosbag+csv&oq=rosbag+csv

It might be helpful to convert from a PointCloud2 to a PointCloud first:
https://www.google.com/search?q=ros+convert+pointcloud2+to+pointcloud&oq=ros+convert+pointcloud2+to+pointcloud

[Kevin Hallenbeck]

Closing due to the general nature of the question. See https://answers.ros.org/